spermidine molecular structure, 3d model molecule, polyamine, structural chemical formula view from a microscope

spermidine polyamine molecule transparent microscope molecular structure chemical formula bubble air model glass c7h19n3 atom oxygen hydrogen carbon physics bond biological aging youth biochemistry chemistry science composition reaction ageing atomic ball skeletal structural substance drawing nanotechnology illustration compound longevity concept organic flat putrescine ribosomes semen spermidin synthase triamine view from microscope